Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

People put me on the table and cut me but do not eat me. What am I?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Which number should replace the question mark?